Well, Chantal Jansen is a really well liked person in our country. She is the most famous host of the three in the Netherlands and is by far the most experienced presentor(though Jan is surely trying to get there.) besides that all three are able to sing, but I feel Chantal could be able to host like Petra Mede. I think Edsilia is very bubbly, so she is fun to watch, but she is actually not known as a presentor in our country. She hasn't done any big television shows, or something like that. Though she has presented some Eurovision stuff, I personally wasn't expecting her as a host on beforehand, but after I hear about the happiness and excitement in the eurovision bubble, she probably will do great.
Jan Smit will be the knowledge guy, I may not like him that much as a host, but we can be sure he comes well prepared on stage and knows his facts.
I expect Chantal Jansen as the main host while the I think Edsilia is by far the best in the green room. Jan can do the points if he really wants.